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9f36eaed | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
b283666f PW |
2 | /* |
3 | * Because linux/module.h has tracepoints in the header, and ftrace.h | |
4 | * eventually includes this file, define_trace.h includes linux/module.h | |
5 | * But we do not want the module.h to override the TRACE_SYSTEM macro | |
6 | * variable that define_trace.h is processing, so we only set it | |
7 | * when module events are being processed, which would happen when | |
8 | * CREATE_TRACE_POINTS is defined. | |
9 | */ | |
10 | #ifdef CREATE_TRACE_POINTS | |
11 | #undef TRACE_SYSTEM | |
12 | #define TRACE_SYSTEM module | |
13 | #endif | |
14 | ||
3bc29f0a MD |
15 | #if !defined(LTTNG_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ) |
16 | #define LTTNG_TRACE_MODULE_H | |
b283666f | 17 | |
6ec43db8 | 18 | #include <probes/lttng-tracepoint-event.h> |
7c68b363 | 19 | #include <linux/version.h> |
b283666f PW |
20 | |
21 | #ifdef CONFIG_MODULES | |
22 | ||
23 | #ifndef _TRACE_MODULE_DEF | |
24 | #define _TRACE_MODULE_DEF | |
25 | struct module; | |
26 | ||
b283666f PW |
27 | #endif |
28 | ||
3bc29f0a | 29 | LTTNG_TRACEPOINT_EVENT(module_load, |
b283666f PW |
30 | |
31 | TP_PROTO(struct module *mod), | |
32 | ||
33 | TP_ARGS(mod), | |
34 | ||
f127e61e MD |
35 | TP_FIELDS( |
36 | ctf_integer(unsigned int, taints, mod->taints) | |
37 | ctf_string(name, mod->name) | |
38 | ) | |
b283666f PW |
39 | ) |
40 | ||
3bc29f0a | 41 | LTTNG_TRACEPOINT_EVENT(module_free, |
b283666f PW |
42 | |
43 | TP_PROTO(struct module *mod), | |
44 | ||
45 | TP_ARGS(mod), | |
46 | ||
f127e61e MD |
47 | TP_FIELDS( |
48 | ctf_string(name, mod->name) | |
49 | ) | |
b283666f PW |
50 | ) |
51 | ||
52 | #ifdef CONFIG_MODULE_UNLOAD | |
53 | /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ | |
54 | ||
3bc29f0a | 55 | LTTNG_TRACEPOINT_EVENT_CLASS(module_refcnt, |
b283666f PW |
56 | |
57 | TP_PROTO(struct module *mod, unsigned long ip), | |
58 | ||
59 | TP_ARGS(mod, ip), | |
60 | ||
f127e61e MD |
61 | TP_FIELDS( |
62 | ctf_integer(unsigned long, ip, ip) | |
b4feff86 | 63 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) |
f127e61e | 64 | ctf_integer(int, refcnt, atomic_read(&mod->refcnt)) |
7c68b363 | 65 | #else |
b5e54ced | 66 | ctf_integer(int, refcnt, __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs)) |
7c68b363 | 67 | #endif |
f127e61e MD |
68 | ctf_string(name, mod->name) |
69 | ) | |
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70 | ) |
71 | ||
3bc29f0a | 72 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_get, |
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73 | |
74 | TP_PROTO(struct module *mod, unsigned long ip), | |
75 | ||
76 | TP_ARGS(mod, ip) | |
77 | ) | |
78 | ||
3bc29f0a | 79 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_put, |
b283666f PW |
80 | |
81 | TP_PROTO(struct module *mod, unsigned long ip), | |
82 | ||
83 | TP_ARGS(mod, ip) | |
84 | ) | |
85 | #endif /* CONFIG_MODULE_UNLOAD */ | |
86 | ||
3bc29f0a | 87 | LTTNG_TRACEPOINT_EVENT(module_request, |
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88 | |
89 | TP_PROTO(char *name, bool wait, unsigned long ip), | |
90 | ||
91 | TP_ARGS(name, wait, ip), | |
92 | ||
f127e61e MD |
93 | TP_FIELDS( |
94 | ctf_integer(unsigned long, ip, ip) | |
95 | ctf_integer(bool, wait, wait) | |
96 | ctf_string(name, name) | |
97 | ) | |
b283666f PW |
98 | ) |
99 | ||
100 | #endif /* CONFIG_MODULES */ | |
101 | ||
3bc29f0a | 102 | #endif /* LTTNG_TRACE_MODULE_H */ |
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103 | |
104 | /* This part must be outside protection */ | |
6ec43db8 | 105 | #include <probes/define_trace.h> |